LYON POTW - Wastewater Treatment Plant in Lyon, Mississippi

LYON POTW is a municipal wastewater treatment plant located in Lyon, Coahoma County, Mississippi. The facility serves a small population of 403 residents, reflecting its role as a local infrastructure asset in the rural Mississippi Delta region. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities discharging to surface waters. With a designed capacity of 340.69 megaliters and an annual discharge volume of 189.27 megaliters, the plant operates well within its capacity, indicating adequate headroom for current demand. The treated effluent from LYON POTW ultimately drains into the Mississippi River basin, a major waterway that flows into the Gulf of Mexico. The plant's discharge contributes to the overall nutrient load in the basin, which is a region of concern for hypoxia in the Gulf. Proper secondary treatment helps reduce organic pollutants and suspended solids, supporting downstream water quality.

LYON POTW discharges into the Mississippi River basin, which drains a vast agricultural and urban area before reaching the Gulf of Mexico. The Gulf of Mexico experiences seasonal hypoxic zones, largely driven by nutrient runoff from the Mississippi watershed. The plant's secondary treatment reduces biochemical oxygen demand and total suspended solids, helping to mitigate local impacts on receiving waters.